Rolling fireproof blind or partition



(No Model.)

W. R. KINNEAR.

ROLLING FIREPROOF BLIND 0N PARTITION. No. 546,858. Patented Sept. 24,1895.

ANDREW EGHMMM, PHOTO LID1O.WASNINGTONID C.

PATENT WILLIAM R. KINNEAR, OF COLUMBUS, OHIO.

ROLLING FIREPROOF BLIND OR PARTITION.

SPECIFICATION forming part of Letters Patent No. 546,858, datedSeptember 24, 1895.

Application filed June 4,1896. Serial No. 551,666- (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM R. KINNEAR, a citizen of the United States,residing at C0- lumbus, in the county of Franklin and State of Ohio,have invented certain new and useful Improvements in Rolling FireproofBlinds or Partitions; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The object of my invention is to make an improvement upon the curtainshown in my application for Letters Patent of the United States filedApril 6, 1895, Serial No. 544,711.

By my present invention I propose to strengthen and render morefireproof and durable the curtain heretofore invented by me; and myinvention consists in making an improvedform of slat of doublethicknesses of metal and providing an air-space between the bodyportions of the same.

My improvements also embrace a device to be placed and secured in theends of alternate slats to prevent the movement of the slatslongitudinally upon each other and to take the Wear on the edges otthecurtain, as well as to serve as a guide for the same as it is raised andlowered in its grooves at the sides of the window.

In the accompanying drawings, Figure 1 represents a vertical sectionalview of a portion of the curtain partially wound on a roller. Fig. 2 isa sectional view of two of the slats on a larger scale. I Fig. 3 is aperspective view of a fraction of the curtain, showing the stop forpreventing longitudinal movement of the slats. Fig. 4 is a perspectiveview of the stop.

Each of the slats of the curtain is composed of two pieces or folds ofmetal having their body portions rolled to have preferably substantiallythe curves shown at 1 and 2 and 1 and 2', and their edges lapped andbent to form the shoulders 3, grooves 4, and tongues 5, with a narrowslit 6 between the edge of the tongue and the shoulder, so that when oneslat is slid longitudinally onto another an air-space, which iseffective in preventing the passage of heat, and each part is braced andstrengthened by the other I have shown the two parts composing the slatcurved in the same directionthat is, practically parallel to eachother-so that they may be more compactly rolled up on a roller; butWhere the curtain is to be used asa partition they may be curvedoppositely, as shown by the dotted lines in Fig. 2.

To prevent the slats from endwise movement upon each other I provide ashort block 7, formed like that shown in Fig. 4, adapted to fit nicelyin the end of the slat, and having a flange 8, projecting over thegrooved part of the ends of the adjoining slats. This block has a smallrecess 9, into which the metal of the slat may be punched to hold it inplace.

To strengthen as well as to ornament the slats they may be made withtransverse ribs, as shown in Fig. 2.

The hollow spaces in the slats may be filled with asbestos or othernon-combustible material.

What I claim, and desire to secure by Letters Patent, is-

1. A slat for rolling blinds or curtains formed of two thicknesses ofmetal bent to form a hollow air space between them and with a shoulder3, and their edges lapped together and bent to form a single groove anda single tongue on each edge with a narrow slit between the edge of thetongue and shoulder 3, whereby a similarly constructed slat may be slidlongitudinally into the groove and when so slid in shall be inseparabletherefrom in a lateral direction, substantially as described.

2. A slat for rolling fire-proof curtains and the like composed of twothicknesses of metal having their edges lapped and bent to form theshoulders 3, grooves 4, and tongues 5, substantially as described.

3. A slat for fire-proof curtains and the like composed of twothicknesses of metal having their edges lappe'd and bent to formshoulders 3, grooves 4, tongues 5 and their body portions parallellycurved with an intermediate air space between them, substantially asdescribed.

4. A curtain composed of hollow metallic slats connected by a hingejoint and a plug IOC secured in the ends of the slats having aprojecting beyond the faces of the slats ,subflange adapted to engagethe ends of a constantially as and for the purpose explained. IO

tiguous slat to prevent longitudinal move- In testimony whereof I affixmy signature ment of the two with respect to each other, in presence oftwo witnesses. 5 substantially as described. WILLIAM R. KINNEAR.

5. A curtain composed of hollow metallic \Vitnesses: slats connected bya hinge joint, a plug se- A. J. SMART, cured in the ends of the slats,having flanges GEO. M. FINCKEL.

